This ^^^ - I was just about to do the same thing - so I'll take it 1 step further:

Quote:

Originally Posted by m_dogg2021

--------------DUAL 9V BATTERY MOD-------------

Yes this is how the mod gos together so don't ask why do I connect the reds to the black and vise verse. If you do it as I tell you then there wont be any issues.

This is a very easy mod to so its very hard to screw up.

There has been some cases where this mod has fryed a board but I have had nothing wrong so far. I don't know what the dude did to this mod to fry his board all I know is he did. If you fallow the instructions as I made them then you shouldn't have any issues with this mod.

--------------Parts you need--------------
- Three 9v connectors (radio shack $5 for 5)
- Heat shrink (radio shack or just use electrical tape)
- solder iron (maybe but if your don't know how to then just skip this)

Cut the heat shrink into two 1 1/2" pieces. Slip the 1 1/2" heat shrinks on one of the connectors. wire up the the connectors like so\/ making sure that the top one has the heat shrink on it.
Solder the connections together. Slip the heat shrink over the newly solder connections. Use your soldering iron and heat up the heat shrink so it gets smaller. DONE!

The other way to do this is just twist the wires together and tape them up but this is the cheap and easy way and most of the time it will come undone.

Test this in your halo to see if you have done a good job if it works then you are good if it doesn't then redo the mod.